13123001543 has 2 divisors, whose sum is σ = 13123001544. Its totient is φ = 13123001542.

The previous prime is 13123001527. The next prime is 13123001557. The reversal of 13123001543 is 34510032131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13123001543 - 2⁴ = 13123001527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13123007543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6561500771 + 6561500772.

It is an arithmetic number, because the mean of its divisors is an integer number (6561500772).

Almost surely, 2^13123001543 is an apocalyptic number.

13123001543 is a deficient number, since it is larger than the sum of its proper divisors (1).

13123001543 is an equidigital number, since it uses as much as digits as its factorization.

13123001543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 13123001543 its reverse (34510032131), we get a palindrome (47633033674).

The spelling of 13123001543 in words is "thirteen billion, one hundred twenty-three million, one thousand, five hundred forty-three".